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Simplify approximate_edge

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This commit is contained in:
Hanno Braun 2022-03-22 15:13:21 +01:00
parent 6854755be4
commit 6d50d25146
1 changed files with 15 additions and 31 deletions
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46
fj-kernel/src/algorithms/approximation.rs
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@ -59,7 +59,7 @@ impl Approximation {
fn approximate_edge(
mut points: Vec<Point<3>>,
vertices: Option<[Vertex; 2]>,
) -> Approximation {
) -> Vec<Point<3>> {
// Insert the exact vertices of this edge into the approximation. This means
// we don't rely on the curve approximation to deliver accurate
// representations of these vertices, which they might not be able to do.
@ -82,18 +82,7 @@ fn approximate_edge(
}
}
let mut segments = HashSet::new();
for segment in points.windows(2) {
let p0 = segment[0];
let p1 = segment[1];
segments.insert(Segment::from([p0, p1]));
}
Approximation {
points: points.into_iter().collect(),
segments,
}
points
}
/// Compute an approximation for a cycle
@ -108,10 +97,18 @@ pub fn approximate_cycle(cycle: &Cycle, tolerance: Scalar) -> Approximation {
let mut edge_points = Vec::new();
edge.curve().approx(tolerance, &mut edge_points);
let approx = approximate_edge(edge_points, edge.vertices());
let edge_points = approximate_edge(edge_points, edge.vertices());
points.extend(approx.points);
segments.extend(approx.segments);
let mut edge_segments = Vec::new();
for segment in edge_points.windows(2) {
let p0 = segment[0];
let p1 = segment[1];
edge_segments.push(Segment::from([p0, p1]));
}
points.extend(edge_points);
segments.extend(edge_segments);
}
Approximation { points, segments }
@ -153,24 +150,11 @@ mod tests {
points.clone(),
Some([v1.get().clone(), v2.get().clone()])
),
Approximation {
points: set![a, b, c, d],
segments: set![
Segment::from([a, b]),
Segment::from([b, c]),
Segment::from([c, d]),
],
}
vec![a, b, c, d],
);
// Continuous edge
assert_eq!(
super::approximate_edge(points, None),
Approximation {
points: set![b, c],
segments: set![Segment::from([b, c]), Segment::from([c, b])],
}
);
assert_eq!(super::approximate_edge(points, None), vec![b, c, b],);
}
#[test]